Compilation instructions

1. Extraction of the source code:

   $ svn co http://svn.lmd.jussieu.fr/LMDZ_WRF LMDZ_WRF
   

2. Copy (not int the repository folder...) folder WRFV3 to the desired spatial resolution (F77 legacy). As example one for 80x90x39

   $ cp -R WRFV3 ${WORKDIR}/WRFV3_80x90x39
   

3. Go to the ${WORKDIR} and compile there

   $ cd ${WORKDIR}/WRFV3_80x90x39
   

4. Define domain size for LMDZ editing file lmdz/dimensions.h (see documentation for more details)

   $ cat lmdz/dimensions.h
      INTEGER iim,jjm,llm,ndm,wiim,wjjm,wbdym
   
      PARAMETER (iim= 1, jjm=7031, llm=38,ndm=1,wiim=79,wjjm=89,wbdym=5)
   

jjm = (dimx-1) * (dimy -1)
llm = (dimz - 1)
wiim = dimx - 1
wjjm = dimy - 1
wbdym = 5 (up to now, mandatory to run WRF with 5 grid points in the sponge zone)

5. run script tools/prepare_compilation.bash ('-h', for help. copy netCDF libraries and other staff not automatized)

   $ ./prepare_compilation.bash [WRF_LMDZsrc] [NETCDFhome] ${WORKDIR}/WRFV3_80x90x39
   

6. prepare compilation (ready for 'lmd' machines in serial) if not, edit
   1. $ ./configure
   2. add pre-compiler flag -DLMDZ after -DNETCDF (inside configure.wrf)
   3. modify lmdz/Makefile with that values from the configure.wrf

7. prepare compilation modifying Registry files (already done, have a look just in case):
   1. $ ls -lrta Registry/Registry.EM

      Registry/Registry.EM -> Registry.EM.LMDZ
      

   2. $ ls -lrta Registry/registry.dimspec

      Registry/registry.dimspec -> registry.dimspec.lmdz
      

8. Compile as usual

   $ compile em_real >& compile.log
   

9. Compile manually a lmdz subroutine (not working, not knowing why). Example with gfortran serial in lmdz machines

     $ cd lmdz
     $ gfortran -O3 -ftree-vectorize -ftree-loop-linear -funroll-loops -w -ffree-form -ffree-line-length-none -fconvert=big-endian -frecord-marker=4   -fconvert=big-endian -frecord-marker=4 -O3 -ftree-vectorize -ftree-loop-linear -funroll-loops  -w -ffree-form -ffree-line-length-none -fconvert=big-endian -frecord-marker=4 -g -O0 -fbacktrace -Wall -fbounds-check -c -L/u/lflmd/bin/gcc_netcdf-4.3.0/lib  -lnetcdf -lnetcdff  -I/u/lflmd/bin/gcc_netcdf-4.3.0/include lmdz_wrf_variables_mod.f90
     $ cd ..
   

10. run script for second time tools/prepare_compilation.bash

    $ ./prepare_compilation.bash [WRF_LMDZsrc] [NETCDFhome] ${WORKDIR}/WRFV3_80x90x39
    

11. Recompile as usual

    $ compile em_real >& compile.log
    

12. Checking compilation (empty outputs)
    • $ cat -n compile.log | grep Error
    • $ cat -n compile.log | grep Erreur (just in case you are in a French speaking computer)

13. Running simulation
    1. Run all the steps WPS and real.exe as usual
    2. folder WRFV3/run is not completed (no binaries in repository!), thus get a copy of the right WRF version and use the original source
    3. Edit and modify namelist.input and all the LMDZ *def files provided in WRF/run folder: config.def, gcm.def, physiq.def, run.def, traceur.def

14. You're done, Have fun!